My homemade SW Ep 3 HD-DVD starts up and I can chapter through it fine. At the end of the disc though, it locks up....I think it doesnt know what to do. The XA2 would just restart the disc. I had to power down the player to get the disc out. Not a huge issue, but hopefully will be fixed.

I am having similar playback/navigation issues on my BD-UP5000. It's a week old. Below are noted issues so far:

(1) Played HD Flags Of Our Fathers fairly well - although it chokes during reverse scanning - its jumpy and when play is pressed to revert to normal play it often pauses and hangs for up to 30 seconds before play continues. Sometimes it just hangs as if it is pausing and I must stop play altogether. This reverse scanning issue was consistent on all disks I have tried so far.

(2) Pop up menu for Flags Of Our Fathers did not give me movable cursor on several occasions. Otherwise playback and picture quality was very good.

(3) HD Planet Earth allows pop-up menu but navigation does not work - I can go through the process of selecting a chapter in the navigation but it does not "take" when I select a chapter. The pop-up menu disappears as if it is going to move to the correct chapter but nothing happens.

(4) Pressing STOP on all disks I have tried so far causes the player to restart from the beginning of the disk when pressing PLAY afterwards. The resume feature one would normally expect does not work. I have to leave the disk paused in order to resume playback. The "resume play" button does not seem to work at all.

I will post more issues as I come across them. Please post any others you may be having.